<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="请输入1-100之间的整数">
<input type="button" value="猜一猜" onclick="f()">
<h1>结果:<span></span></h1>
<script>
    let x = parseInt(Math.random() * 100) + 1;//得到1-100之间的随机整数
    console.log(x);
    let input = document.querySelector("input");//得到文本框
    let span = document.querySelector("span");//得到span
    let count = 0;
    function f() {
        count++;
        if (input.value>x){
            span.innerText = "猜大了!";
        }else if (input.value<x){
            span.innerText = "猜小了!";
        }else{span.innerText = "恭喜你第"+count+"次猜对了!"}
    }
</script>
</body>
</html>